Snap-hook



(No Model.)

B. J. MILLER;

SNAP HOOK.

No. 327,008. Patented Sept. 29, 1885.

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UNITED STATES PATENT 01mins.

EDNVARD J. MILLER, OF FARMERSVILLE, PENNSYLVANIA.

SNAP-HOOK.

SPECIFICATION forming part of Letters Patent No. 327,008, datedSeptember 29, 1885.

Application filed June 23, 1885.

To (1% whom it may concern.-

Be it known that I, EDWARD J. MILLER, a citizen of the United States,residing at Farmersville, county of Lancaster, State of Pennsylvania,have invented a new and useful Improvement in Snap-Hooks, of which thefollowing is a specification.

This improvement relates more particularly to snaps for reins,hitching-straps, and analogous purposes.

The object of the improvement is to supply a snap as readily attached toa strap as the ordinary snap, and that will look as readily to any ringor point for attachment, and that will automatically lock thespring-bolt itself, so that all efforts of the animal to release itselfwill be ineffectual. At the same time the additional security gained issecured at a trifling cost.

The drawings herewith, forming a part of this specification, disclosevery fully the salient points of my improvement, like letters ofreference indicating similar parts throughout.

Figure 1 represents in side elevation the improved snap. Fig. 2 is aplan of the back of the same. Fig. 3 represents in longitudinal sectionthe construction of the improved snap. Fig. 4 is a transverse section ofthe body of the snap on the line act of Fig. 3. Fig. 5 represents inside elevation a detached view of the center bolt and the sub-lockingdevice in combination therewith.

A represents the body of the snap; A, the bore for the reception of thespring-bolt; A the usual head; A the strap-loop; A*, a slot provided forthe bolt-slide; A a recess provided at the back for the reception of thesublocking device; B, the spring-bolt, provided with a reduced stem, B,and having a sliding head, B, engaging with the slot A of the snap body.

0 represents the automatic sub-loek, which has a head, 0, spring 0",tail C and fulcrum D. The tail, as shown, drops within the bore A, inthe rear of the stem B of the springbolt B, being retained in saidposition by the outward pressure of the spring 0 The tail may beshortened and made to drop into a recess in the bolt, the sub-lock beingreversed in its position upon the back of the snap with- (No model outaffecting the principle of the lock. I give preference to thearrangement as shown, as the most convenient for handling.

D is the fulcrum of the sub-lock, and E is a spiral spring wound aroundthe stem of the spring-bolt, the front end of the spring bearing againstthe shoulder of the bolt, and the rear end abutting against the base ofthe bore A. A perforation, A in the rear end of the snap, steadies thestem as the bolt is operated.

In the use of the ordinary spring-bolt snap there is always danger ofthe animal releasing itself by the catching of the head B against someobstruction; but in a snap constructed according to my improvement thiscannot occur, as there can be no withdrawal of the spring-bolt Without asimultaneous depression of the head 0 of the sub-lock G and the out wardmovement of the tail O and to do that requires the application of humanintelligence and action.

The construction of the body of the snap is similar to the majority ofthose on the market, except that to adapt them to my improvement thebody is made slightly wider, so as to secure room for the application ofthe sub-lock O, the rear or back of the snap being cast with amortise-recess for that purpose. Vhen cast, the head A is turned to oneside sufficient to clear the line of entrance to the bore A, and whenassembling the hooks the spiral spring E is first inserted within thebore, the springbolt B is then introduced, with the web of the head Blying in the slot A, the bolt is then drawn back until the Web contactswith the rear of the slot, and the head A is then twisted into line withthe bore of the snap and the bolt released. The resilience of the springE will throw the bolt forward until it strikes against the return of thehead A".

The sub-lock O is so arranged that the tail 0 shall fall in the rear ofthe stem as it is shot forward by the spring E,which thus automaticallylocks the bolt B in place. The flat spring 0 exerting its force upwardagainst 0, keeps the tail 0 depressed, and the bolt can only bewithdrawn to release the snap by pressing upon the head 0 at the sametime that a sliding force is applied to the head B of the bolt, which iseasily done while the snap is held in the hand.

within a recess in said bolt or in the rear of" 1 the bolt-stem, andprovided with a spring at its front or head to retain the sub-lock inplace, substantially as shown and for the pu'rpose set forth.

2. As an improvement in snap-hooks, the 15 bolt B, having a reducedstemportion, B, forming a shouldered seat for a spiral spring,

E, a guide-perforation, A, provided for said stem at the base of thebolt pocket or bore A, in combination with the bolt-head B slot A, 20sub-lock G," and tail 0 as described, and for the purposeset forth.

EDWARD J. MILLER.

Witnesses:

E. BURKHOLDER,- A. E. BURKI-IOLDER.

